661: Which of the following practices can help in water conservation in agriculture?
1. Reduced or zero tillage of the land
2. Applying gypsum before irrigating the field
3. Allowing crop residue to remain in the field
Select the correct answer using the code given below :
a. 1 and 2 only
b. 3 only
c. 1 and 3 only
d. 1, 2 and 3
662: Bijak was written by:
(a) Tulsidas
(b) Ramdas
(c) Guru Nanak
(d) Kabirdas
663: Recommended daily intake of proteins for a moderately active woman is
(a) 30 g
(b) 37 g
(c) 40 g
(d) 46 g
664: A fertile-soil, suitable for growing common crops, is likely to have a pH value of
(a) three
(b) four
(c) six to seven
(d) nine to ten
665: The Reserve Bank of India (RBI) acts as a bankers' bank. This would imply which of the following?
1. Other banks retain their deposits with the RBI.
2. The RBI lends funds to the commercial banks in times of need.
3. The RBI advises the commercial banks on monetary matters.
Select the correct answer using the codes given below :
(a) 2 and 3 only
(b) 1 and 2 only
(c) 1 and 3 only
(d) 1, 2 and 3